Bright Days Only on Instagram: "Melanie Knecht and Trevor Hahn are a "dream team" of hikers from Colorado. Knecht was born with spina bifida and uses a wheelchair, while Hahn lost his sight to glaucoma. Using a specially designed carrier, Hahn carries Knecht on his back; she acts as his "eyes" by giving verbal directions, while he provides the "legs." This partnership gives Hahn a renewed sense of purpose on the trail and allows Knecht to experience nature beyond her wheelchair as they tackle hi